A professional who presses or rivets parts together for use in assembly of watches, clocks, timers, and industrial motors, using staking machine or hand staking tools. Responsibilities include:

• Positions parts in specific relationship to each other in recess of die (bed) or fits part in punch of machine, using tweezers and loupe.
• Activates machine to lower punch that presses or rivets parts together.
• Places assembled parts on conveyor, in tray, or on table for further processing.
• May be designated according to parts assembled as balance-staff staker; hairspring staker; pin inserter; pinion staker; roller staker.